Trigonal trapezohedron  

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Type  trapezohedra 
Faces  6 rhombi 
Edges  12 
Vertices  8 
Face configuration  3,3,3,3 
Symmetry group  D_{3d} 
Dual polyhedron  trigonal antiprism 
Properties  convex, facetransitive 
In geometry, the trigonal trapezohedron or deltohedron is the first in an infinite series of faceuniform polyhedra which are dual to the antiprisms. It has six faces which are congruent rhombi.
Trigonal trapezohedrons are a subset of the rhombohedrons. The cube is a special case with square faces.
